Cylinder for uniflow steam-engines.



H. FILLING. CYLINDER FOR UNLFLOW STEAM'ENGL-NES; APPLICATION vFILED MAR. 4. Isls.

. 1,268,891 Pafentd June 4;, 1918.

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VWliicli in preccice requires about available for t Be it. known that l, Henny Pennino, e subject of the King of Greet Britain, residing in Chorltoncum-Hsrdy, England, have invented certain ner and useful improve ments in Cylinders for Unilow Steenllnginas, of which the following is a speciiicetion. This invention relates to uniflow steein engines of the type in which for greater for cility olconstruction, essembling or repair the cylinder is built up of separate parte or sections` enel consists essentially of an irnproved construction of cylinder of this type.

lfn nnilow steam engines, gerticulerly those of large' size, the question oi the cylinder construction is i very importent one, inasmuch. es the nigh initial loading on the piston, due to the' high ratio of ex pension in this class of engine, makes it di lcult to provide edequete cylinder strength at the center of the cylinder borrel, Where so innen nietel is necesseily'cut sway to form the exhaust slots..

A second point of importance in coniilensu in unilow engines, is the provision of e. sociently smell cleo-rence et the end of the cylinder, in order that the compression pres` sure nis/y rise, es fer es may be, up to the initiel pressure. For exemple, if the engine is Working with e, goed vacuum giving, say, one' and e hell pounds back pressure only, then, to get back to en initial steam pressure of, soy, 150 lbs. per square inch absolute, the conip'ession' ratio must be 100 to l., one end e heli per cent. 'clearance only. New, it is very cliliicult to get this smell clearance. :in order to provide maximum longitudinal strength in tile cylinder and to obtoin the requisite eren of the enlienst slot-5, these slots have to be mede long and narrow, so' es to leeve suiiicient circumferential motel to give the requisite strength and carry the steam loecl of the engine. )It would oliviouslg/v ne en odventege if the slots conlol be short und Wide, es thereby equal stoom aree conlcl then be provided, endet seme time e rather ,greet-er proportion oi the length oi the cylinder would lie rendered he purposes of compression.

A third point in nniilow engines which presenm. a, dilicolty is that when running the two inlet ends are not conce, end the centeris e colfl soins; therefore., it is necesnsnro e penellel wor sei?, in order to pcoilcetion ci Letters lfetent.

Patented lune isle. semi ne. cocos/J..

cylinder, that the borrel shell lne laorcfl in. the first place taper fashion, the twoends being somewhat smaller than the cente1,`the dilierence being so calculated that when the cylinoer is heated, the parallel form is oli-- tained. This boring' of the cylinder with e. double taper is e very diflicult metter in actuel practice. v

ffein, fourth diculty is that, inns much in man? cases it is necessary to provide a, jeclret et the liot zone end .of 'the cylinders of unilow engines a. complexity of construction is introduced which causes greet diiiicnlty to the iron founder, this coniplexity nieinlffectureoi very large cylinders in. fone piece castings The presentinvention is rie-signed toproV vide Ineens for' overcoming these objections und et the seme time to provide a construc- 'tion of cylinder which, Whether iacketefl or otherwise, shall be es casting strains and manufacturing diiliculties,l anal shell also'fa-ciliete repair enc?. the renewal of any part in cese of occident.

The invention will be fully described with Vre-feri-nnce to the accompanying; drawing-gs, which show by wey ofc' exemple o torni ol cylinder constructed according to the invention.

Figure l is a sectional elevation oi cylincler constructed according to the inventio11;.

Fig. El is e section on line ci Fig. l.

According to the present invention the cylinder A is nimle in 'two parte, tl c joint heine; preferably formed in. the middle of the length oi' the cylinder wllere the lniust; relics place. 'The ends o, a of the two parteci the cylinder A. which to :ibutngcinst eeclx other: are lorincci with peripheral extensions B having chambers ol recesses therein, which when brought getlier forni between them exhaust encinloer or pees-ige surrounding the cylinller A for the outlet of the exhaust stel-ini, e suitable connfsztionbeing inode thereto for its escape. The two parte of the cylioeier are secured together by bolts D passing through the peripheral extensions or Hinges B in Well known manner and also preferably by speciel through bolts set close to the cylinder borrel es n" Y of. in. owe to transmit, in es direct c e es possible, tile lono'itoclinzil forces essie.:

s e l), Ille adjacent ecos ot tlc two ports ol the being e very serious olistecle to the free as possible lfrom lll/lil long the barrel.

actual cylinder barrel are so ,constructed as to forni between them, as shown, a number of passages F leading from the cylinder to the main exhaust 4passage C. -A heating jacket G is shown at one end of the cylinder of course, provided at both ends of the cyl i inder.

I claim ,as my invention; -A cylinder for uni-flow steam engines comprising two sections forming the respective ends of the cylinderand having their adjacent ends in abutting engagement and shaped to form an exhaust port between them, said sections having circumferentially extending flanges cast integrally thereon adjacent to their abutting ends and proj ectin outw a1'd1 from their periphV` eri'es, sai peripheraiI .anges being shaped to form between them a' peripheral exhaust passage in communication with said exhaust port, and 'means directly connecting said circumferential Hanges on the sections and operative to draw the adjacent ends of said sections into abuttin engagement and to maintain said ends oi the sections in abutting engagement.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

- HENRY FILLING. Witnesses:

WM. HoRToN, v THoMAs' GIBBoN. 

